We compared seven companies that build custom ERP software or extend existing ERP systems: Hicron Software, ScienceSoft, Itransition, Andersen, Belitsoft, BairesDev and Innowise.

They were founded between 1989 and 2009, list team sizes from 250+ to 4,000+ people and describe work from building a new ERP to extending SAP, Oracle or Microsoft Dynamics.

The companies appear in no particular order, and the figures and service details below come from each company’s own website.

The seven custom ERP software development companies side by side

Company	Founded	Headquarters or first office listed	Team size (as listed)	ERP work listed
Hicron Software	2006	Wrocław, Poland	380+ consultants, Agile Delivery Leads and IT professionals	Custom ERP modules and applications that integrate with SAP, Oracle and Microsoft Dynamics
ScienceSoft	1989	McKinney, TX	750+ IT professionals	New ERP from scratch, ERP modernization, customization of market-available ERP
Itransition	1998	Decatur, GA	3,000+ professionals	ERP from scratch, Dynamics 365 customization, Odoo implementations
Andersen	2007	Warsaw, Poland	3,500+ in-house experts	SAP and Oracle services, ERP extensions and plugins, migration, configuration
Belitsoft	2004	Alexandria, VA	250+ employees	Custom ERP from scratch, ERP modules, ERP migration
BairesDev	2009	San Francisco, CA	4,000+ developers on staff	Custom ERP, module customization, migration, seven named platforms
Innowise	2007	Warsaw, Poland	3,500+ IT professionals	Custom ERP, Odoo, SAP S/4HANA and Dynamics 365

Hicron Software: 7 types of custom apps that extend an ERP

Hicron Software was established in 2006 and lists 380+ consultants, Agile Delivery Leads and IT professionals. Its headquarters is in Wrocław, with offices in Poznań, Warsaw, Augsburg, Zurich, Malaga and Sydney.

Its custom ERP page says it builds custom applications that integrate with SAP, Oracle and Microsoft Dynamics without over-customizing the ERP core, and lists seven application types, including partner and dealer portals, a vendor management system and production line and shopfloor apps.

One case study covers a 9-month project that integrated a manufacturing execution system (MES) with SAP, using .NET and Modbus. In a retail case study, Hicron Software integrated a POS system with SAP ERP so that financial data is sent automatically at the end of the day. All seven application types are listed on the page for Hicron Software’s custom ERP software and ERP customization services.

Good fit for: teams that want custom applications next to an existing SAP, Oracle or Microsoft Dynamics system without over-customizing the ERP core.

ScienceSoft: about 98% fewer runtime errors in a client’s ERP

ScienceSoft was founded in 1989 and is based in Texas, with its address in McKinney. It lists 750+ IT professionals and says it has delivered 4,300+ IT projects since 1989 for clients in 80+ countries.

The ERP page covers building a new ERP from scratch, modernizing an existing one or customizing a market-available system, with modules including finance, HR, supply chain and production. A Give Back Wireless case study reports runtime errors in the client’s ERP falling from 800-1,000 per week in August 2024 to 18 per week in March 2025, about 98% fewer.

Good fit for: companies deciding between a new ERP and a revamp of the current one, since ScienceSoft says it runs a feasibility study to weigh upgrading against replacement before a project.

Itransition: 50+ ERP projects listed on its custom ERP page

Itransition was founded in 1998 and says its US and European offices house 3,000+ professionals. Its contact page lists offices in Decatur, London, Warsaw and Vilnius, among others.

On its custom ERP page, Itransition lists 50+ ERP projects and says it builds ERP solutions from scratch, and its customization page covers Dynamics 365 Business Central and Finance & Supply Chain Management. In an Odoo implementation for a US industrial automation repair company, a case study reports manual work reduced by 90%.

Good fit for: buyers weighing a custom build against Odoo or Dynamics 365 who want one partner that lists all three routes.

Andersen: 40+ SAP projects and 80+ SAP specialists

Andersen was established in 2007 and lists 3,500+ in-house experts. Its headquarters is in Warsaw, with development centers in Munich and Krakow and a representative office in London.

Andersen’s ERP page lists five services, including development of ERP extensions and plugins, and eight ERP platforms it works with. Its SAP page cites 40+ SAP projects and 80+ SAP consultants, analysts and developers, and its Oracle page lists Oracle ERP alongside database and cloud solutions. In an SAP project for a major bank, Andersen reports automating more than 70 reports and reducing period-end closing effort by 40%.

Good fit for: companies that want add-ons, plugins or extensions for an existing ERP, with SAP and Oracle each covered on a dedicated page.

Belitsoft: custom ERP from scratch and 12 popular ERP modules

Belitsoft was founded in 2004 and lists 250+ employees. It describes itself as an international company with offices in the USA and Europe, and its ERP page lists addresses in Alexandria (VA), London and Warsaw.

The ERP page offers custom development from scratch, module development and migration between ERP systems, and lists 12 of the most popular modules it builds. Belitsoft says it delivers a first iteration within 3 to 5 months. For a European timber and wood products manufacturer, it built a custom ERP with 7 modules and says using it cut costs for the business by 25%. It also says its SaaS ERP for car service bodyshops is used by 200+ B2B customers.

Good fit for: companies in the USA or Western Europe that want a new ERP built to order, with modules such as those on its list of 12 popular ones.

BairesDev: 7 ERP platforms and 4,000+ developers on staff

BairesDev says it was founded in Buenos Aires in 2009 and describes itself as a US-based company powered by LATAM dev teams. Its ERP page lists 4,000+ developers on staff, and its contact page lists offices in San Francisco, Austin, Toronto and Buenos Aires, among others.

The ERP page names seven platforms BairesDev implements and customizes, including SAP S/4HANA, Oracle NetSuite, Microsoft Dynamics 365 and Odoo. In one case study, an agricultural cooperative serving 6,000+ members replaced a 40-year-old legacy system with a custom ERP built by BairesDev over 2 years with 10 senior engineers.

Good fit for: teams that want nearshore ERP developers working US business hours, with customizations documented and tested for upgrade compatibility.

Innowise: 100+ ERP projects on major platforms and custom systems

Innowise was officially established in 2007 and says it is headquartered in Warsaw, Poland. It brings together 3,500+ IT professionals, and its contact page lists offices in the USA, Germany and Switzerland, among other countries.

According to its ERP page, Innowise teams have delivered over 100 ERP projects on major platforms and custom business systems, and names SAP S/4HANA, Dynamics 365 and Odoo. For IS Engineering, Innowise implemented Odoo 17 Enterprise as one connected system for sales, purchasing, production, finance, service, HR and reporting, in a project that ran from August to November 2024.

Good fit for: companies planning an Odoo upgrade or an SAP ECC-to-S/4HANA migration, or a custom ERP whose modules are defined together with the team.

Which custom ERP software development company fits your project

• A new ERP built to order: ScienceSoft, Itransition, Belitsoft, BairesDev and Innowise each list custom ERP development, and ScienceSoft, Itransition and Belitsoft describe it as building from scratch.
• Extending or customizing an ERP you already run: Hicron Software (applications that integrate with SAP, Oracle and Microsoft Dynamics), ScienceSoft (customization of market-available ERP), Itransition (Dynamics 365), Andersen (extensions and plugins), BairesDev (module customization) and Innowise (enhancements to live SAP S/4HANA systems).
• Moving to another ERP or modernizing the current one: ScienceSoft (revamp of a legacy ERP), Itransition (Dynamics 365 and Odoo migration cases), Andersen (ERP migration), Belitsoft (migration between ERP systems), BairesDev (migration and modernization) and Innowise (Odoo upgrades and SAP ECC-to-S/4HANA migrations).
• Odoo as the base platform: Itransition (Odoo implementations), Innowise (an Odoo 17 Enterprise case for IS Engineering) and BairesDev (Odoo among seven platforms).

Do these companies build ERP from scratch or extend an existing ERP?

Both routes appear on these companies’ websites, though not on every site. ScienceSoft, Itransition and Belitsoft each describe building an ERP from scratch, and BairesDev and Innowise list custom ERP development. Hicron Software, ScienceSoft, Itransition, Andersen, BairesDev and Innowise also describe extending or customizing an ERP that is already in place.

Which ERP platforms do these companies work with?

Hicron Software’s applications integrate with SAP, Oracle and Microsoft Dynamics, and Andersen lists IFS, SAP, Epicor, Oracle, Microsoft, Acumatica, Infor and Plex. BairesDev lists SAP S/4HANA, Oracle NetSuite, Microsoft Dynamics 365, Odoo, Infor CloudSuite, Epicor ERP and Sage Intacct.

Innowise names SAP S/4HANA, Dynamics 365 and Odoo, and Itransition names Odoo and Dynamics 365 among its ERP pages. Belitsoft’s migration page uses Oracle ERP and Microsoft Dynamics GP as an example of switching between ERP systems.

Figures and service details come from each company’s own website, read on 16 October 2026. Team sizes, offices and services change, so check the company’s website before shortlisting.